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Finding the Fourth Proportional to 121,928.32, 182,914.32 and 43,088.32

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Solution

The fourth proportional to 121,928.32, 182,914.32 and 43,088.32 is: 64,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,928.32 : 182,914.32 = 43,088.32 : x
  2. Step 2: Convert to fraction form
    121,928.32/182,914.32 = 43,088.32/x
  3. Step 3: Cross multiply
    121,928.32x = 182,914.32 × 43,088.32
  4. Step 4: Simplify right side
    121,928.32x = 7,881,470,752.74
  5. Step 5: Solve for x
    x = 7,881,470,752.74/121,928.32
  6. Step 6: Final answer
    x = 64,640.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.